## About the Dataset
### 1082 hours

This audio dataset contains 1082 hours of Mandarin Chinese Speech Data in Banking, Telecommunication, Insurance and Retail domains, recorded by native Mandarin Chinese speakers from PRC.

Domain distribution per dataset:

- 220.5 hours of Banking
- 261.88 hours of Insurance
- 281.47 hours of Retail
- 318.67 hours of Telecommunication

Defined.ai creates scenarios for our crowd members to follow, which they study beforehand. They then record a conversation, one speaker playing the agent, the other speaker “playing out” the scenario with spontaneous content. The recording is done via telephony and is saved in 8khz 16 bit per channel. That content is then transcribed.

The dataset is covered by [Defined.ai's standard license agreement](https://www.defined.ai/dataset/data-licence-agreement). The license agreement is perpetual and allows for the commercialization of all models built on the data.

Other characteristics:

- Audio format: WAV
- Recording environment: noisy, silent
- Bits per sample: 16
- Communication band: broadband
- Sample rate: 8Hz

## Samples

Check this 5-minute audio sample [here](https://defineddata.blob.core.windows.net/samples/ADR_zh-cn_multi-spontaneous_telco_B1_v01_30m_Sample/Audio/3854204e-97d2-4a6d-a7b6-d25483a12c7d.wav?se=2025-07-11T14%3A59%3A23Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=aek/N0AmadNo27aTShHl36FDNmeLYBaXmlm9bG2DTDM%3D). Transcription for the sample is also [available](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_Mandarin_Chinese_Short_Transcription_7812162b6e.tsv?updated_at=2023-06-06T13:45:51.924Z).

Tell us about yourself, and get access to a free 30-minute sample of the Mandarin Chinese dataset

Download a 30-minute sample of Mandarin Chinese (PRC) Spontaneous Dialogue in Telecommunications domain [here](https://defineddata.blob.core.windows.net/samples/ADR_zh-cn_multi-spontaneous_telco_B1_v01_30m_Sample/ADR_zh-cn_multi-spontaneous_telco_B1_v01_30m_Sample.zip?se=2025-07-11T14%3A59%3A23Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=aek/N0AmadNo27aTShHl36FDNmeLYBaXmlm9bG2DTDM%3D).

Mandarin Chinese (PRC) Spontaneous Dialogue

Download Sample

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